Rove stop mechanism



Nmn 5, 1935. A. R. Gow

ROVE STOP MECHANISM Filed June 16, 1934 2 Sheets-Sheet 1 NGV@ 9 A. R GQW ROVE STOP MECHANISM 2 Sheets-Sheet 2 Filed June 16, 1954 Patented Nov. 5, 1935 UNITED STATES ATENT QFHQE ROVE STOP MECHANISM Application `lune 16, 1934, Serial No. '730,942 In Great Britain June 21, 1933 10 Claims.

'I'his invention relates to rove stop or broken thread indicating devices of the type or class by which, when the detector member moves, on the breakage or slackness of its respective thread, the force of a continuously moving member is brought into action to effect the stoppage of the delivery of the rove or thread until same is repaired and brought into continuity. And my present invention consists in so arranging said detector mechanism that when it moves under the breakage or failure of the tension of the yarn to sustain it in its proper position, it allows certain members to engage with the continuously operating devices, to grip the end of the thread and stop its further delivery, while at the same time removing or separating the delivery rollers from each other. These movements are, according to my present invention, effected under such conditions that the detector mechanism and the parts which operate in conjunction with same are removed from contact and are held entirely clear of the continuously moving member until the attendant repairs the broken thread in manner well known. Further than this, I arrange the continuously operating member so that during the process of dofng all the devices which are actuated by said operating member are removed clear of same and are retained stationary and in desirable positions during the said process of doffing, whether same is carried out manually or by the use of dofng mechanism. All of which parts may be readily re-adjusted in position when the productive functions of the machine and the spinning operations are resumed.

In the accompanying sheets of drawings which are illustrative of my invention, and to which reference is made in the following description:.

Fig. l is a sectional side elevation of the drawing and delivery rollers of a spinning, doubling, twisting or like machine with my improved devices arranged in connection with said rollers and other parts, as is hereinafter described. The positions in which the several operating members are shown in this figure are those that said members occupy during the continuity of the threads, as is hereinafter fully explained.

Fig. 2 is a similar view to Fig. l, but shows the devices in their respective positions which they assume on the breakage or failing of the yarn or thread.

Fig. 3 is an end elevation showing mechanism mounted at the end of the spinning frame for use in connection with the devices which are put out of action during the doing operations, as is hereinafter fully explained.

Fig. 4 is an elevation of the parts shown by Fig.

3 as seen looking from left to right of said figure.

Fig. 5 is a view of certain members shown by Fig. 3, adjusted in their respective positions hereinafter described. .il

A indicates the end frame of the machine.

In carrying my invention into effect I arrange each of the detector members 2 to reach upwardly from the position Where its outer end 2a contacts with the yarn or thread b when said 10 thread is in position or continuity. This detector member 2 is pivo-tally mounted at 2b by a stud extending laterally from its body part taking into a slot 2c formed in a bracket 3, Which is fixed upon the framework A1. The other end of 15 the detector 2 has a stud 2d also arranged to extend laterally from it to contact with a hori- Zontally disposed lever Il, the stud 2d being adjustable relative to the position of the detector 2 and the upper edge of the lever 4 as is herein- 20 after explained, while another stud 2f adjustably mounted in a slot made through the bracket 3 acts as a stop member for the lever 2 as is hereinafter explained. To counterbalance the weight of the lever 2 about the centre of the pin 2b, an 25 adjustable weight 2g is mounted upon a stud f xed in a slot formed through the upper end of said lever 2. By these means as the weight 2g is moved nearer to the outer end of the detector lever 2, the lower end of said lever 2 will press 30 more firmly upon they thread b as will be understood, Whereas when the weight 2g is moved along said slot in the lever 2 and further from the end thereof, the Weight or force which the lower end 2a of the lever presses upon the thread b is de- 35 creased to meet the requirements of a more delicate or less heavy type of thread or yarn.

The lever i which has its counterbalancing Weight lla mounted upon it, is pivoted at 4b to` a vertical level 5, and this vertical lever 5 is loosely 40 carried upon a shaft 6 carried by supports fixed to the end frame A.

The lever is arranged to have a projecting hook dc which extends vertically from its pivotal pin db so that it'may be in contact with or arrested in its motion by a pin 5a that extends laterallyfro-m the lever 5. Thus the lever 4 is adjusted in its desired position so that its upper edge, which is of the particular shape and configuration hereinafter described, is presented for 50 contact with the stud 2d on the detector lever 2 hereinbeiore explained.

The upper end of the lever 5 is of a forked or open-ended formation to pivotally receive a A swivelling member 5b which is arranged to slide 55 upon the horizontally slidable bar 1, while on the said bar T, to the left of the member 5b, is mounted a spring lb, and on the opposite end of the same bar 'I is mounted another spring 1a which is held in position thereon by lock-nuts 'Ic so that the actions of the lever arm 5 upon the member 5b will be transmitted to the spring 'Ib on the one hand, and to the spring 'Ia on the other. The spring 'Ib has its outer ends arranged so that one is operated by the member 5b, while the other end is in contact with a sliding forked thread catching member 8, the end of the bolt 'I being secured to said member 8 by the set-screw 8a.

The member 8 extends over its supporting bracket 8b so that its opposite end 8c is of a looped formation to span a jaw 8d fixed upon the member 8b in order that the V-formation of the jaw within the loop of the member 8c may t into the V-shaped groove 8d on the member 8 to secure the thread b as is hereinafter described.

Pivoted upon the stud of the member 8b is a freely swinging catch member 9, the catch 9a of which is for engagement with'the inner edge 9b of a plate that is fixed tothe framework A, while the outer end of the freely pivoted catch 9 is of the bent formation to facilitate its handling by the attendant.

Upon the bearing 8b which is fixed to the framework A is a lever I which is pivoted at Illa, while at its opposite end is mounted a weight IDb which acts thereon as is hereinafter described. The other end of the lever IU has a spanning bearing groove to take over the axial pin I Ia, of the rearwardly moving gripping roller II, this gripping roller being, by the lever I0 and its weight Illb, forced forward so that its periphery will be pressed against the periphery of the positively rotated drawing roller I2 for purposes well known, said roller I2 being one of the series on a shaft I2a which extends lengthwise the machine.

Extending laterally from the arm of the 'lever 5 is another arm 5d in an elongated slot of which is mounted a supporting stud 5f which takes beneath the lever I0 so as to support same in the position as illustrated by Fig. l.v

The lever 4 which is pivoted upon the lever 5, as is hereinbefore described, has on its lower edge v or surface an engaging catch or lateral projection 4g which is for engagement with an oscillating member I3 so as to be operated thereby in manner hereinafter described. The end 4h of the lever 4 is bent to extend over or above the stud 2d which is xed upon the end of the lever 2, so that by said hooked formation 4h of the lever 4 the path of movement of the stud 2d vertically is limited to be kept thereby in a proper relative position with the lever 4, to enable said lever 4 at all times to act thereon asis hereinafter explained.

The member I3 has a catch or hook I3a formed on its upper surface so that in its oscillations from right to left it may engage with the engaging edge 4g of the projecting member from the lever 4 under the conditions hereinafter explained.

The shaft I4 extends lengthwise of the machine, so that for each spindle and for each set of apparatus in connection with said spindle there is a separate operating member I3.

On the breakage or failing of the rove or thread b the weight ofthe upper end of the lever 2 causes its lower end 2a to move forward from the position shown in Fig. 1 to the position shown in Fig. 2, while its upper end engages the'intermediate lever'4 to bring its catch I3a into the path of motion of the oscillating lever I3. When thus engaged the lever I3 moves the lever 4 forward and causes the lever 5 to oscillate about its centre 6 so that the lever I9 is raised and the roller II is removed from contact with the roller I2, while the upper end of the lever 5 withdraws the gripping jaw 8c from its normal extended position into engagement with the gripping jaw 8d, thereby gripping said rove and preventing its continuity. In this position the catch member 9 is moved to its rear position and its catch 9a engages with a member 9b that retains it from returning to its normal position until the attendant has repaired the thread or rove.

During the reparation of the thread or rove by the attendant as stated, said attendant will have moved the lever 2 from its advanced position so that it will engage with the gripping springs 2m of well known formation, and will remain in said position until the reparation is completed, on which the attendant will then lift the loose end of theY catch member 9 and allow the recoil of the spring 'Ia to replace all the parts hereinbefore referred to into their normal operating positions for the spinning of the rove or thread to continue.

In connection with the device described, in order to enable the functions of the oscillating members I3 to be suspended during the process of doffing, we make use of the following arrangement of mechanism for attaining said results.

The oscillatory motion transmitted to the shaft I4 is derived (except when manually disengaged as hereinafter described) from a sprocket wheel I5 (see Figs. 3 and 4) which is rotated from any continuously revolving shaft of the machine when said machine is in action. This sprocket wheel I5 transmits motion through its chain I5a to another sprocket wheel I5 to which is fixed a toothed pinion Ia so that as the Wheel I6 revolves, so also does the pinion IBa. This pinion Ia trans'- mits motion to a wheel I6b fixed upon a shaft I'Id on which is fixed a disc I'Ial to receive the crank pin I'Ic. The connecting rod I 'Ib which is connected to the crank I'Ic extends so that its outer end may be connected to a swivelling member I8 pivoted upon the slotted arm I 9 of a lever mounted loosely upon a shaft I4. Thus as the crank I'I revolves so does it transmit reciprocatory motion to the lever I9.

Adjacent the lever I9 and fixed upon the shaft I4 by the key 20w is a catch plate 20 Which has a catch 20a formed upon it for engagement with the pawl 2| that is mounted loosely upon the stud 2 Ia xed upon the oscillating lever I9. On the end of the lever I9 and about a similar space from the centre of the slot where the crank rod I'Ib is pivoted, a projection 2lb is also xed, so that as it projects laterally from the end of the lever I9 it may contact with a projection 29h from the oscillating catch plate 29, while the other edge of the projection 2Gb has its path of motion determined by the adjustably screwed stud 29e which is fixed upon a bracket 29d secured upon the framework of the machine, the normal position of the plate 2l) being thus secured between 65 the stud 2 Ib and the screw 29e.

By these devices the actions of the crank I'Ic hereinbefore described effect the oscillating motion of the shaft I4, and by said oscillating motion the members I3 fixed upon the shaft I4 also 70 said shaft 30 may have at its opposite end a hand 'lever 22d fixed upon it. By these means when the attendant moves the hand lever 22d (at the opposite end of the machine) the shaft 3i] will move the cam member 22 which is loosely mounted upon the hub of the plate 2G, and since the movement of the cam member 22 will be in a clockwise direction as shown by the arrow on Fig. 3, its periphery at 22g will turn a finger or projecting member 22h which extends from the pawl 2l (see Fig. 5) in order to raise said pawl out of the notch 2te in the plate 2li. Thus the oscillations of the crank transmitted to the pawl Zia will be rendered ineffective sofar as regards the operating of the shaft lll. These devices are provided to enable the attendant to arrest the motions of the members I3 during the process of dong or at any other desired time.

Such being the nature of my said invention, what I claim isz- 1. In rove stop mechanism for spinning and like machines, a broken rove detector lever, pivotal and guiding devices for said lever, supports for said devices, a lever operated by the detector lever on the failing of its thread, an oscillating member for engaging with the lever operated by the detector lever, means for imparting motion to the oscillating member, a three-armed lever operated by the oscillating member and gripping jaw and feed roller operating devices actuated by the three-armed lever.

2. In rove stop mechanism for spinning and like machines, a broken rove detector lever, devices for supporting and guiding said lever, a pivotally mounted engaging member operated by the detector lever, a three-armed lever upon one of the arms of which the engaging member is pivoted, a roller-supporting weighted lever operated by another arm of the three-armed lever, the roller and weight supported by said lever, a sliding gripping jaw actuated by the third arm of the three-armed lever and a fixed jaw for enabling the rove to be gripped.

3. In a rove stop mechanism for spinning and like machines, the combination of a detector lever for contacting with its respective thread, a pivotal pin fixed to said lever adjacent its upper end, a fixed bracket having a slot to receive and support the pivotal pin of the detector lever, an engaging lever, an adjustable stud mounted on the detector lever to operate said engaging lever when the detector lever moves upon the breaking or failing of its respective thread, gripping jaws for gripping the end of the broken thread, feed rollers for the thread, and means for automatically rendering the feed rolls inoperative and for actuating the gripping jaws when the thread breaks.

4. In a rove stop mechanism for spinning and like machines, the combination of a thread detector lever, pivotal and guiding studs carried by said lever, a bracket having slots to receive said studs, an adjustable counter-balancing weight mounted on one end of the detector lever, an oscillatory member, an engaging lever for cooperation with said oscillatory member normally held out of engagement therewith, a stud on the detector lever for actuating said engaging lever when the thread breaks to bring the engaging lever into engagement with said oscillatory member, thread feeding rollers and means operable by the engaging lever when engaged With said oscillatory means for rendering the feeding rollers inoperative when the thread breaks.

5. In a rove stop mechanism for spinning and like machines, the combination of a thread detector lever, pivotal and guiding studs carried by said lever, a bracket having slots to receive said studs, an adjustable counterbalancing weight mounted on one end of the detector lever, an oscillatory member, an engaging lever for cooperation with said oscillatory member normally held out of engagement therewith, a stud on the detector lever for actuating said engaging lever when the thread breaks to bring the engaging lever into engagement with said oscillatory member, thread feeding rollers, and means operable by the engaging lever when engaged with said oscillatory means for rendering the feeding rollers inoperative when the thread breaks, and additional means controlled by the engaging lever for gripping the broken thread.

6. In a rove stop mechanism for spinning and like machinesguthe combination of a broken rove detector lever, means for pivotally supporting said lever, an engaging lever, a continuously operable oscillatory member normally out of contact with said engaging member, means carried by the detector lever to move the engaging lever into engagement with the oscillatory member when the thread breaks, feed rollers normally engaging the thread, means controlled by the engaging lever for rendering the feed rollers inoperative when the thread is broken and the engaging lever and oscillatory member are engaged with one another, normally separable coacting jaws between which the thread passes after passing between the feed rollers and means operable by the engaged lever and oscillatory member for moving the jaws into a closed position when the thread breaks to grip the broken thread, c

'7. In a rove stop mechanism for spinning and like machines, the combination of a broken thread detector lever, means for pivotally supporting said lever, an engaging lever, thread feeding rollers, means operable by the engaging lever for rendering the feeding rollers inoperative when the thread is broken, additional means controlled by the engaging lever for gripping the broken thread, mechanism on said detector lever to move the engaging lever into a position where it may actuate the aforesaid means when the thread is broken, said mechanism including an oscillatory shaft, a member fixed on said shaft for engagement with the engaging lever, an arm carried by the oscillatory shaft, a second shaft, an arm secured on the second shaft, a rod connecting said arms, a catch plate detachably secured on the rst shaft, a reciprocating pawl for engagement with the catch plate, and a constantly operating crank operatively connected with said pawl.

8. In a rove stop mechanism for spinning and like machines, the combination of a broken thread detector lever, means for pivotally supporting said lever, an engaging lever, thread feeding rollers, means operable by the engaging lever for rendering the feeding rollers inoperative when the thread is broken, additional means controlled by the engaging lever for gripping the broken thread, mechanism on said detector lever to move the engaging lever into a position where it may actuate the aforesaid means when the thread is broken, said mechanism including an oscillatory shaft, a member fixed on said shaft for engagement with the engaging lever, an arm carried by l rst shaft, a reciprocating lever, a constantly operable crank, a pawl carried by the lever and operatively connected With the crank, a lateral projection on the pawl, a cam cooperating with the lateral projection on the pawl for disengaging the latter from the catch plate, and manually controlled means for actuating the releasing cam.

9. In a rove stop mechanism, the combination of a pair of feed rollers, coacting thread gripping jaws independent of the feed rollers, normally maintained in an inoperative position, a detector lever for contacting the thread, and a single means operable by the detector lever when the latter is moved by the breaking of the thread to automatically render the feed rollers inoperative and simultaneously move the gripping jaws into an operative position to grip the broken thread.

10. In a rove stop mechanism, the combination of a pair of feed rollers, coacting thread gripping jaws independent of the feed rollers, normally maintained in an inoperative position, a detector lever for contacting the thread, and a single means operable by the detector lever when the latter is moved by the breaking of the thread to automatically render the feed rollers inoperative and simultaneously move the gripping jaws into an operative position to grip the broken thread, and means for resetting the movable parts after the broken thread has been repaired.

ARTHUR ROSS GOW. 

